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Code P0430 on 2003 SuperCrew

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Old Mar 3, 2010 | 12:34 PM
  #1  
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Code P0430 on 2003 SuperCrew

Hi All,

I thought about posting this in the 97-03 section but I think it will get more traffic here. I been getting this code off and on.
P0430 Catalytic Efficiency Below Threshold Bank 2. From what I've read from basic research it could be:

- o2 Sensor
- Catalytic Converter
- Plugs/Wires
- Other

My question is, if it were the o2 sensor, which o2 sensor is bank 2, and what do they mean by bank 2? Is there a way of testing the o2 sensor itself with a multimeter and seeing if it is good or bad that way? And is it an easy part to get to?


The truck has 160,000 Miles, and runs smooth as silk.
I recently got it from my good friend, and I think it is probably in need of plugs and wires anyway, so I'm going to go that route first, but I want to be sure the o2 sensor is not the problem. And the last thing I'd consider doing is changing out the cat it being the most costly.

Thanks in advance.
 
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Old Mar 5, 2010 | 11:18 PM
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Found out the difference between bank one and two, now if someone has any idea how to test the o2 sensor with a multimeter, please do chime in. Thanks
 
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Old Mar 6, 2010 | 07:24 AM
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The sensors themselves are pretty cheap, but here's a link to testing them with a multimeter.

TechTips

If you plan on doing a lot of your wn repairs, you probably should consider getting a workshop manual. They can usually be found on eBay for $50-100.
 
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Old Mar 7, 2010 | 04:39 PM
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9 out of 10 times it is the O2 sensor, and it is the driver side.
 
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Old Mar 15, 2010 | 11:00 AM
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Thanks for the tips guys! Really appreciated.
 
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